Texas Instruments ADC34J22EVM

Overview

ADC34J22EVM from Texas Instruments is a quad-channel, 12-bit, JESD204B-compliant analog-to-digital converter evaluation module supporting up to 50 MSPS sampling rate, single 1.8-V ADC supply, onboard LMK04828 clock generator, and transformer-coupled differential input circuitry for RF and communications signal chain validation.

For engineers reviewing the ADC34J22EVM datasheet, ADC34J22EVM pinout, ADC34J22EVM application, or ADC34J22EVM equivalent, this page delivers verified hardware configuration details, jumper-controlled power options, HSMC interface compatibility with TSW14J56, and GUI-based register control via USB SPI for rapid ADC34J22 characterization.

Technical Context

The ADC34J22EVM implements a full-signal-chain evaluation platform for the ADC34J22 - a quad-channel, 12-bit, 50 MSPS JESD204B subclass 0/1 ADC in a 7-mm × 7-mm QFN-48 package. It integrates dual 1:1 transformers for balanced analog input, onboard LMK04828 for low-jitter clock synthesis, and configurable power paths using TPS62080 DC/DC and TPS7A4700 LDOs.

Signal routing supports both AC-coupled (default) and DC-coupled operation via resistor swaps on channels B and C; SYSREF and SYNC signals are routed for deterministic latency alignment; JESD204B lane outputs connect via HSMC to TSW14J56 for real-time data capture and analysis.

Key Specifications

Availability

ADC34J22EVM is available at Aetrix Electronics and suitable for RF receiver design, software-defined radio prototyping, and high-speed data acquisition systems requiring stable component supply, traceable sourcing, and long-term evaluation platform availability.

Supply support for ADC34J22EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and high-performance data converters, with leadership in precision and high-speed ADC technologies.

The ADC34J22EVM belongs to TI's high-speed ADC evaluation module family, designed specifically to accelerate development of JESD204B-based receiver systems in communications infrastructure, test equipment, and radar applications.

FAQ

What is the primary target device supported by the ADC34J22EVM?

The ADC34J22EVM is purpose-built for evaluating the ADC34J22 - a quad-channel, 12-bit, 50 MSPS, JESD204B-compliant analog-to-digital converter. It provides full hardware and software integration for that specific device, including matching clocking, power sequencing, and lane mapping. The ADC34J22EVM does not support other members of the ADC3xJxx family without firmware or hardware modification.

Does the ADC34J22EVM include an onboard clock generator?

Yes, the ADC34J22EVM integrates the LMK04828 ultra-low-jitter clock generator as its default clock source. This enables deterministic SYSREF and synchronized multi-device timing required for JESD204B subclass 1 operation. External clocking remains possible via the EXT_ADC_CLK SMA connector when precise system-level clock distribution is needed.

How is analog input coupling configured on the ADC34J22EVM?

The ADC34J22EVM ships in AC-coupled mode using dual 1:1 transformers and 50-Ω termination. DC coupling is enabled by swapping specific surface-mount resistors near the baluns on channels B and C - per Table 7 in SLAU579D - without requiring amplifier rework, since THS4541RGT drivers are pre-installed.

Which data capture platform is compatible with the ADC34J22EVM?

The ADC34J22EVM connects directly to the TSW14J56 High-Speed Data Capture and Pattern Generator via its HSMC interface (J13A/B). This pairing enables real-time JESD204B lane capture, error checking, and FFT analysis using TI's HSDC Pro software, fully validated in Section 3.4–3.6 of the user's guide.

What power supply requirements does the ADC34J22EVM have?

The ADC34J22EVM requires a stable 5-V, ≥3-A DC input via the barrel jack (J20). Internally, it generates 1.8 V for the ADC and 3.3 V for the LMK04828 using dedicated DC/DC and LDO stages. Jumpers JP9, JP10, JP12, and JP13 allow bypassing LDOs to use switcher outputs - detailed in Table 2 of SLAU579D.